1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d9a4281e9f7a55c3fcb049a4763cdb7e28ac97a56b1cc7f621f8467547900. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e8acd27-f6d3-458a-a41f-7c297aa64af6.json and https://artists.proofprofile.net/proofs/artist/2e8acd27-f6d3-458a-a41f-7c297aa64af6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).